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      03-01-2019, 10:54 AM   #23
andrewmr
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Ok, I'll bite.

How many CFM of air does the engine need?

Does it need more than the 900 CFM that the stock system flows?

Does the extra 240 CFM provide a real advantage? And by real advantage I mean more than 3 or 4 horsepower.
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      03-01-2019, 12:27 PM   #24
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intake alone is like new sneakers for someone with a broken leg. without supporting software and hardware it will not improve performance or mobility. tune+exhaust+intake and now you got yourself something worth throwing money at.

Last edited by iconoclast; 03-01-2019 at 12:41 PM..
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      03-03-2019, 01:45 PM   #25
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No. You need the Dinan lid. The filters will not fit the stock enclosure without it.
That blows. Who has the best price on this Dinan setup?
They're sold here a lot for good prices and eBay.
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      03-12-2019, 12:16 PM   #26
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I installed a Dinan CAI with the (already installed) Stage II piggy-back. SOTP feel is more responsive and quicker in my humble opinion. OP, thanks for making up my mind to purchase this CAI.
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      03-12-2019, 11:09 PM   #27
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The Dinan filter design is like having a velocity stack built in. Velocity stacks have proven to smoothen the air flow and in turn generate a little more power. I had a Dinan but really wanted an open air system for sound purposes.
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      03-13-2019, 10:20 AM   #28
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The only other system on the market that I saw which may be worth the money is RK. Who did you go with?
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      03-13-2019, 10:31 PM   #29
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I went with RK. It’s the only open system on the market

Been raining really hard lately and felt the need to swap the stock box in. Good chance to feel the difference.

The stock box felt like the low end torque was not noticeably better than the rk but when at some speed the RK has better response. Performance wise I would say slightly better overall but depends where are looking for the power.

The rk design is pancaked to fit under the hood. Not sure if it’s the best airflow design but doesn’t look there was another choice. Wonder how much it affects the overall performance

Was researching if someone made a oval pancake velocity stack that might be incorporate but haven’t found anything.

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The only other system on the market that I saw which may be worth the money is RK. Who did you go with?
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      03-14-2019, 07:31 AM   #30
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I believe you will find that low end is lost and output is moved to a different portion of the power band when installing any intake but more so with one sucking in far more air.
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      03-18-2019, 10:36 PM   #31
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I believe you will find that low end is lost and output is moved to a different portion of the power band when installing any intake but more so with one sucking in far more air.
Interesting. Fortunately, I never got the chance to sample a stock X5M. We picked up a CPO 2016 X5M a few moths ago, and it already had the Dinan CAI, exhaust and Stg-II tune installed by the original owner (along with the Dinan front springs).

If it's missing any low-end torque, I sure can't tell it's missing; this thing explodes off the line! I do however, keep standing start launches to a minimum (like only a couple times in 4 mos). I've still never tried the actual launch control.

All in all, it's a pretty amazing vehicle__this is our 4th X5 ('02 & '05 4.4s & '11 35)__and my wife's daily driver. It hit 19k miles today, and still presents as new.

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      03-19-2019, 06:59 AM   #32
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You have supporting hardware that negates that effect. Intake alone is what generally removes a slight bit of low-end.
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      03-19-2019, 11:46 AM   #33
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Nobody posted a picture of the intake on the car.
This was shortly after we got it home, and I removed ALL the plastic shrouding to wash and wipe off the dealer-detailed Armor All-like sticky crap.
Just a sheen of Hybrid V07 now (SAND sticks to anything oily down here).

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      06-19-2019, 05:37 PM   #34
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Might be a dumb question...is there a reason why we couldn't just buy the Dinan filters and skip the CF cover? Other than aesthetics, is there something I'm missing?
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      06-19-2019, 07:28 PM   #35
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Quote:
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Might be a dumb question...is there a reason why we couldn't just buy the Dinan filters and skip the CF cover? Other than aesthetics, is there something I'm missing?
Filters wouldn't physically fit under the stock lid.
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      06-19-2019, 08:16 PM   #36
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Filters wouldn't physically fit under the stock lid.
I meant to ask if I could run without any lid with the Dinan filters exposed.
Any drawbacks?
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      06-20-2019, 12:22 AM   #37
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Originally Posted by syu78 View Post
I meant to ask if I could run without any lid with the Dinan filters exposed.
Any drawbacks?
Why? You would be drawing in hot air from the engine bay. There's a reason it's called the 'Dinan Carbon Fiber Cold Air Intake'.
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      06-20-2019, 08:00 AM   #38
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Why? You would be drawing in hot air from the engine bay. There's a reason it's called the 'Dinan Carbon Fiber Cold Air Intake'.
I was looking to save about $1k by buying just the filters and use that towards a piggyback tune. I realize that without the lid to insulate it I would be drawing in more hot air, but was thinking the cold air coming in from the grille thru the bottom of the filter box will offset that a little.
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      06-20-2019, 09:47 AM   #39
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do it right or dont do it at all.
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      06-07-2020, 08:18 PM   #40
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Quote:
Originally Posted by Randy Forbes View Post
Interesting. Fortunately, I never got the chance to sample a stock X5M. We picked up a CPO 2016 X5M a few moths ago, and it already had the Dinan CAI, exhaust and Stg-II tune installed by the original owner (along with the Dinan front springs).
Wow, nice find with the additional mods. We also picked up a 2017 50i for my wife, but she's only driven it a handful of times. I keep taking it to the mountains
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